It’s the best-remembered maritime disaster on the books, a story that’s been overlaid with romance and intrigue from the moment the great ship grazed the iceberg 100 years ago next month.

But the tale of Titanic is not just a legend of yore. It’s a century-old pop-culture phenomenon, a grand and endless show that’s been revived, relived and reinvented again and again — on the stage, on the screen, on the page, on the radio, at the museum.

For a hundred years, we’ve eaten it up. Our collective cultural appetite for Titanic has been, well, titanic. Dozens of films have been made, starting with “Saved From the Titanic,” released just 29 days after the disaster and starring real-life survivor Dorothy Gibson (who was, handily, already an accomplished film actress). The 1997 film “Titanic” was No. 1 at the box office for 15 weeks straight — and has banked nearly $2 billion to date.

Stage plays, novels, popular music, dance — all have found inspiration in the story of the ill-fated White Star liner. Museums around the country and around the world exhibit supposed artifacts rescued from the wreck, from Mrs. Astor’s life preserver to menus from the First Class dining room.

There’s even a Titanic-shaped museum in the country-kitsch capital of Branson, Mo., that features an installation dedicated to the dogs that went down with the ship.

When does a tragedy become a touchpoint — not just for reflection, but for unapologetic entertainment? In the case of RMS Titanic, it didn’t take long. And iceberg or no iceberg, our fascination shows no sign of slowing down.

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